D defs.my
Entry 1 sense Webster, 1913

Photo-

/(fō"tō̇-)/ · Pho·to- · IPA /foʊtoʊ/
01 A combining form from Gr. fw^s, fwto`s, light; as, photography, phototype, photometer.
  1. 1.
    A combining form from Gr. fw^s, fwto`s, light; as, photography, phototype, photometer.